hjr2000

Thanks for the reply Neil. I put Stardock on my machine a long long time ago, and so Hibernate may well have been switched off in the OS for a long time too.

Stardock - I followed your instructions as so. 1. Uninstall StarDock10 2. Reboot 3. Purge 4. Reboot 3. Install v1.8 4. Reboot No Hibernate option!! What I had to do in addition was to go to Control Panel\Hardware and Sound\Power Options\System Settings and switch the hibernate option back on too, not forgetting to hit save too. See https://winaero.com/blog/add-hibernate-to-the-start-menu-in-windows-10/ Thanks for wasting